Cannot start Mongo DB. Unable to lock file: /data/db/mongod.lock Resource temporarily unavailable

Question

I installed MongoDB with Homebrew. I also created a directory called /data/db.

However, when I run mongod, I get this message:

exception in initAndListen: 98 Unable to lock file: /data/db/mongod.lock Resource temporarily unavailable. Is a mongod instance already running?, terminating

I doubt it's already running because I just installed it. I've quit the terminal and rebooted, but it doesn't help.

Here's a screenshot of my terminal

Any idea what I need to do? Thanks!

are you sure that ```/data/db/``` has permissions of user, otherwise try you ```sudo mongod``` — julian salas, Apr 26 '17 at 18:26
try you this ```sudo chown -R mongodb:mongodb /data/db``` then ```sudo chown $USER /data/db``` — julian salas, Apr 26 '17 at 18:32
Got the same error but mine was caused by not shutting down mongo properly. See: https://stackoverflow.com/questions/6857781/what-is-the-use-of-the-mongo-lock-file — Geoffrey, Sep 15 '17 at 06:10

score 0 · Answer 1 · answered Jan 10 '20 at 05:41

0

try stopping the mongod service using the command

brew services stop mongod

answered Jan 10 '20 at 05:41

Narendra Reddy

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Cannot start Mongo DB. Unable to lock file: /data/db/mongod.lock Resource temporarily unavailable

1 Answers1